Walkers Game Ear, Digital HD Elite Game Ear with Aridion Nano Technology is 20% smaller than standard game ears and has four digital sound processing channels that provide clear audio without outside interference. The 20 bit audio processor yields extremely crisp and precise sound. The Digital HD Elite features an 8 band graphic equalizer that gives the audio that rich, full, wide-band quality with automatic feedback control. Equipped with one environmental adaptive listing mode and 40dB of enhancement, you will hear better than ever. The toggle volume control allows the user to adjust the volume based on the environment. Fast acting sound compression quickly suppresses any noise that could harm the users ears with a 29dB NRR rating. With a low battery tone indicator that warns the user when the battery is low. The Aridion Nano Technology coats every aspect of the Digital HD Elite Game Ear at a nanoscopic level and protects much more thoroughly than alternative approaches. This technology provides a truly durable, invisible liquid repellent coating inside and out resulting in a rugged, all-weather, worry-free game ear. Moisture from high humidity, perspiration and ear wax are by far the leading cause of service issues. Aridion Nano Technology answers this challenge, providing improved reliability and confidence. Whether you are caught in an unpredicted rainstorm or perspiring during an extreme hunt, the HD Elite will be protected from the elements.